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Structure-induced enhancement in electrooxidation of trimetallic FePtAu nanoparticles.

Authors
  • Zhang, Sen
  • Guo, Shaojun
  • Zhu, Huiyuan
  • Su, Dong
  • Sun, Shouheng
Type
Published Article
Journal
Journal of the American Chemical Society
Publisher
American Chemical Society
Publication Date
Mar 21, 2012
Volume
134
Issue
11
Pages
5060–5063
Identifiers
DOI: 10.1021/ja300708j
PMID: 22380021
Source
Medline
License
Unknown

Abstract

Using FePtAu nanoparticles (NPs) as an example, this Communication demonstrates a new structure-control strategy to tune and optimize NP catalysis. The presence of Au in FePtAu facilitates FePt structure transformation from chemically disordered face-centered cubic (fcc) structure to chemically ordered face-centered tetragonal (fct) structure, and further promotes formic acid oxidation reaction (FAOR). The fct-FePtAu NPs have mass activity as high as 2809.9 mA/mg Pt and retain 92.5% of this activity after a 13 h stability test. They become the most efficient NP catalyst ever reported for FAOR. This structure-control strategy can be extended to other multimetallic NP systems, providing a general approach to advanced NP catalysts with desired activity and durability control for practical applications.

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